Available Technology

Buoyant device for bi-directional acousto-optic signal transfer across the air-water interface

A buoy system bi-directionally communicates in-air and underwater. A buoy having a shell to float on water has an upper portion in air and a lower portion in water. An array of acoustic transducers which is disposed in the lower portion receives acoustic signals and transmits acoustic signals. A dome-shaped retro-reflective coating on the upper portion is vibrated for retro-reflecting impinging laser illumination as data signals in air. An array of photo-detectors on the upper portion are responsive to impinging laser control signals and/or signals which may be transmitted as acoustic signals in water.
Inventors: 

Lynn T. Antonelli, Fletcher A. Blackmon

Patent Number: 
US6813218
Patent Issue Date: 
December 2, 2004
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